Clip ordering seems broken

[QPhysics137]

I am trying to organize "boilerplate" responses to certain proofreading errors into blocks so all the proofreaders in the company can have a standard set of responses.

The problem is that when I try to move some clips up or down to get them in the block I want, or in the order of highest use in each block, sometimes hitting "Move up" or ctrl-up arrow moves them up multiple spaces. It may move them up 3 lines once and 10 lines the next time. It seems completely random. Then when I reopen the Ditto window, they may be back where they were before I moved them...or in a completely different placement.

This is what it looked like when I opened the Ditto window. I want to move the two highlighted responses directly under Pedagogy.

Hitting Move Down once does this:

The next time I opened Ditto, the responses were here.

I think drag-and-drop would be a good feature, but in the meantime, is there any way to make sure that hitting control and up-arrow one time only moves a clip up one line instead of jumping all over the page?

Thanks